we actually have eight units of the federal government armed services as part of the parade itself. the navy, the marines, the air force and the army are participating in the parade as well as the national guard. we'll also have the universal sole circuits out so it will be a great day for families to come down and enjoy the day. we are definitely well prepared and people have been up all night. as you can see, it's a strong presence of police down there now. >> terrorists try to strike fear in our hearts and to shake our resolve, but emancipation day is a very special day celebrated in the district because people didn't allow their resolve to be shaken. explain to those who are unfamiliar with what this day means, especially in the district of columbia. >> this is a very unique holiday for the district of columbia. 151 years ago, president abraham lincoln executed the d.c. emancipation compensation act which freed the 3,100 enslaved persons in the district of columbia. it's the only time in the history of this government where it paid $1 million to the enslaved owners to release th